Daewoo DSL-19M1WC Service Manual page 54

7 GND I/O
8 NOUT2 O
9 NOUT1 O
10 VDD I
11 PWMOUT O
12 CTPWM I/O
13 PWMDC I
14 CLAMP I
15 ISEN I
16 MODSEL O
N AND P-CHANNEL ENHANCEMENT MODE POWER MOSFET
2. AP4511M
±15% ohm pull-low resistor.
The ground pin of the device.
The number 2 output driver for driving the NMOSFET switch.
The number 1 output driver for driving the NMOSFET switch.
The power supplies pin of the device.
The output pin of low frequency PWM generator. A 2.5V or floating two
state output is provided through this pin.
The internal circuit limits the max. Duty-cycle to ～92%.
With the internal reference current and an external capacitor connected
here can set the operation frequency of low frequency PWM generator with
1.0V～2.5V triangle wave output.
Low frequency PWM controlling input. A PWM output comes out by
comparing this DC input and the 1.0～2.5V triangle wave that is generated
by CTPWM.
Over voltage clamping. If a>2.0V voltage is detected. A～60uA current will
flow into the INN pin to reduce the output of the error amplifier pin CMP to
regulate the output voltage.
Load current detection pin, the open load situation is detected if a less than
1.3V input is sensed.
To set the output polarity of the low frequency PWM controller.
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